RDF Genes v1.0.2 resource rework

Rubber Milk (RDF_RubberMilk)
- Edible food
- Nutrition: 0.05
- AnimalProduct + Fluid
- AnimalProductRaw category
- 14 day rot time
- New 128x128 RDF-style item texture

Gene-produced latex (RDF_RawLatex)
- Fabric stuff category
- Textiles thing category
- Cloth-equivalent armor/insulation baseline
- Can be used by recipes/stuff filters that accept Fabric

Compatibility
- Existing defNames preserved.
- No DLL/source behavior changes required; this is an XML + texture rework.

Optional RDF Latex Infrastructure integration
- RDF_LiquidLatex is patched to Fabric/Textiles.
- Latex Secretion and Enhanced Latex Secretion output RDF_LiquidLatex directly when that shared resource exists.
- Without Latex Infrastructure, the genes keep their standalone RDF_RawLatex fallback.
